Compressed-air motor



(No Model.) 2 sheets-sheet 1. A. JORGENSEN. GOMPRESSBD AIR MOTOR.

No. 402,838. Patented'lVIay 7, 1889.

.fliorney N. PETERS Phamulhagmpmr, wamingwn. mc.

2 sheetsv-sneen (No Model.)

AJORGENASBN. GOMPRESSED AIR," MOTOR.

No. 402,838. Patented May?, 1889l UNITED STATES PATENT OFFICE.

AXEL JORGENSEN, OF DES MOINES, IOVA.

CoMPREssED-AIR MOTOR.'

SPECIFICATION forming part of Letters Patent No. 402,888, dated May 7,1889.

Application filed August 13, 1888.

To all whom it Muay concern:

Be it known that I, AxEL JORGENSEN, of Des Moines, in the county of Polkand State of Iowa, have invented a certain new and useful machine,device, and combination as a means for using compressed air as a motivepower in propelling street-cars, other cars, vehicles, and machinery ofall kinds, of which the following is a specification.

Generally my invention consists of one or more accumulators orreservoirs made of suitable material, in which is stored compressed airintroduced through an orifice or valve at any convenient part thereof,which may be of such density or degree of compressure as may be neededfor the car, vehicle, or machinery to be propelled. As applied to astreet-car, for instance, the accumulators or reservoirs may becylindrical and ten feet in length and ten inches in diameter, or anyother length or diameteror form desired, and as applied to such car theymay be used in duplicate or quadruplicate, one on either side of thecar, on the top of it, or under the seat on either side, or under thecar, or other position*horizontal, perpendicular, or otherwise-as may befound most convenient, and connected by pipe with each other or with theequalizer direct, as desired, together with an v auxiliary reservoir orequalizer made of suitable material, which is placedbetween theaccumulators or reservoirs, as described above, and the engine, ashereinafter described, and to be connected with each, as hereinafterparticularly described. As applied to a street-car, for instance, theauxiliary reservoir may be cylindrical in form and of ten inches in diameter and two feet in length, or any other diameter or length desired, orthe auxiliary reservoir may be made in a square or globular, tubular, orany other form or dimensions. This auxiliary reservoir may be locatedunder and crosswise of the car or other suitable position and convenientto the engine or propelling machinery. This auxiliary reservoir isconnected directly with one or all of the accumulators or reservoirs bypipe with avalve to regulate the supply of air from the accumulators orreservoirs to the auxiliary reservoir, as desired, and is also connectedwith the engine or propelling machinery.

My engine or propelling machinery (as ap- Serial No. 282,691. (Nomodel.)

plied to street-cars) is about sixteen by thirty inches, or otherlarger,l smaller, or different size and form. The size named is locatedunder the street-car immediately forward of the auxiliary reservoir. Thepiston-rods are about twenty-one inches from center to center, thecylinders about three and one-half inches by three and one-half inches,oscillating and with oscillating valves. The connection of thepiston-rods with the axle of the car may be direct, by cog-wheels,sprocketwheels with chains, or other known device for connectingmachinery with shafts or axles.k Into this engine the compressed air isintroduced from the auxiliary reservoir by means of a pipe in which isfixed the throttle-valve by which the use of the compressed air iscontrolled.

Having thus described generally in outline my invention, I do herebydeclare that the following is a full, clear, and accurate description ofmy invention, which will enable others skilled in the art to which itpertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

My invention consists in the devices, features, andcombinationshereinafter specified and claimd.

Figure l is my invention attached to the bottom of a street-car, withthe bottom of the iron box containing the engine removed. A A are twoaccumulators or reservoirs placed under the seats of the carlongitudinally, (shown by dotted lines,) with a section of the bottom ofone side of the car broken away, showing a section of the accumulator orreservoir in place on that side. a is a horizontal pipe extending acrossthe car', connected by perpendicular pipes c1. and a', as shown by Fig.,with the reservoirs or accumulators on each side of the car, by meansof which the compressed air is conducted to pipe b, and thence to theauxiliary reservoir B, passing through the valve b', which valve iscontrolled by the governor, as shown by Fig. 3 and hereinafterdescribed. B is my auxiliary reservoir, into which the compressed air isintroduced through pipe h and valve h and pipes ct and a. The forwardpart of pipe b extends to the drivers platform and connects with thegage shown in Fig. 2.

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c is a tube, into which is fitted the piston-rod e, with aclosely-iitting head, which maybe six inches or more in length. Upon therod c is a spiral spring, 7L., extending from the lever 7l. of the valveb to the sleeve h, which is moved by means of the rod c, to which is at#tached the lever, as shown in Fig. 2. d is a pipe leading from theauxiliary reservoir to the drivers platform, connected with the gageshown in Fig. 2. C is my engine,which is constructed in the mannerhereinbefore generally stated; or it may be constructed after anyapproved method for the construction of steam or compressed-air enginesor motors. Connected with this engine is the pipe f, leading from theauxiliary reservoir B to the point of di vision into pipes f and f',leading to the respective cylinders ot' the engine. In pipe f is thethrottle-valve g, which is operated by means ot' the rod g', extendingto the drivers platform, and having upon it an angle-lever, as shown inFigs. l and 2. D is a sprocket wheel on the crank-shaft of the engine,connected by chain with the sprocket-wheel F, which is iirmly attachedto the axle of the car. The size of these sprocket-wheels will be suchabstractly and relatively as the nature of the route to be traversed orthe machinery to be operated may require.

Fig. 2 is a sectional view of the drivers platform on the dotted line m.Pipe d, to which is attached gage d', leads to the auxiliary reservoirB, and the gage indicates the degree of air-pressure in the auxiliaryreservoir B. Pipe Z), to which is attached the gage b, is a continuationof pipe l), (shown in Fig. 1,) which connects, through pipe a and a',with the reservoirs or accumulators A A and indicates the degree of airpressure therein. Rod c, Fig. 2, is a continuation of rod c in Fig. 4and is connected therewith by an angle-lever, as shown in Figs. 1 and 2.On rod c near its top are ratchet-teethsuch as cB-suited to aspring-pawlt-such as (3i-fastened to the front of the drivers platform.Rod g is a continuation of rod g in Fig. l., and is connected therewithby an angle-lever, as shown in Figs. l and 2. Near the top of this rodare ratchet-teeth suited to a spring-pawl fastened to the front of thedrivers platform.

Fig. 3 is my automatic governor, whereby the supply of air into theauxiliary reservoir is cont-rolled. c is a tube iitted into theauxiliary reservoir B, into which tube is closely iitted, with packing,a piston-rod, c, which is connected by a pin in slot-lever 7L to avalve, b', on pipe l), through which the air is supplied iirom thereservoir to the auxiliary reservoir. On this piston-rod is a spiralspring, 7L, between the collar h" and the sleeve 7L. 'L' is the supportfor the sleeve and rod, and is fastened to the bottom of the car bymeans of bolts or screws. The amount of air supplied from the reservoirto the auxiliary reservoir is regulated by the valve b', and itsautomatic movement by the pressure of the air in the auxiliary reservoirB upon the head of the piston-rod c. The quantity of air or degrec ofpressure maybe increased by pressing the sleeve h upon the spiral spring7b by means oi' the rod c and the angle-lever cenneeted therewith. I

Fig. 4 is my invention attached to a streetcar, one side thereof beingremoved, disclosing a section view on the dotted line x of Fig. l, withthe side of the engine-box removed. A A are accumulators or reservoirs,one under the seat and one on top of the car, having, respectively,companions on the op posite side, the former only being shown in Fig. l.The vertical pipe a', leading from the lower accumulator or reservoir tothe transverse pipe a, and pipe 7.-., connecting the accumulator orreservoir on top of the car with the pipe a, were not shown in Fig. l,but in Fig. 4 are made fully to appear. The anglelever Z, by which thethrottle-valve is controlled through rod g, is also fully shown in Fig.4c.

I am aware that a compressed-air motor is old in which is used a mainair-tank for holding the compressed air, mounted on wheels, combinedwith. an air-engine connected with the wheels, an auxiliary air-tankconnected with the main air-tank and the engine, a governor forautomatically regulating the passage of air from the main to theauxiliary tank, pipes controlled by valves connecting the en gine andauxiliary tank, so that compressed air can be conducted from theauxiliary tank to thc engine to propel the car or from the engine to theauxiliary tank to aid in stopping the car, and connecting-rods leadingto either end of the car and connecting with a valve to control thesupply of air from the auxiliary tank to the engine; but my inventionconsists of the adaptation of particular means whereby the necessarysupply of air from the main and auxiliary tanks to the engine to operatethe car can be accurately determined and controlled from the platform.

IVhat I claim as my invention, and desire to secure by Letters Iatent,is*

In a compressed-air motor, reservoir A, auxiliary reservoir B, engine C,governor K, provided with. the spring, collar p3, sleeve p2, andpiston-rod e, sprocketfwheels D and F, chain connecting thesprocket-wheel on the engine with the sprocket-wheel on the axle of thecar, gage CZ', gage 19', valve b', valve g, lever g', with ratchet andspring-pawl operating said lever, and lever c, with ratchet andspring-pawl for operating the same, and the air-pipes connected withsaid main and auxiliary reservoirs, gages, and the platform for thepurpose of operating a street-car and the propelling machinery, allsubstantially as herein described..

AXEL JORGENSEN.

Witnesses:

W. W. COLE, L. E. MoYEP..

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